Just to be sure before releasing a commercial video I made.....is the "royalty-free" music that Proshow has been including in it's latest versions useable in commercial videos without having to worry about copyright infringement?

Okay....I've been able to answer my own question. When you open the Music Library there is a link at the bottom of the window that says "usage terms". Click on that and it says that one of the "Acceptable Uses for Registered Users" is "You may use the music in slideshows and videos produced for both commercial and non-commercial purposes." Well duh....don't I feel stupid now!